# Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"). You
# may not use this file except in compliance with the License. A copy of
# the License is located at
#
# http://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file is
# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
# ANY KIND, either express or implied. See the License for the specific
# language governing permissions and limitations under the License.
"""Unit tests for ``dynamodb_encryption_sdk.material_providers.static``."""
import pytest
from mock import MagicMock

from dynamodb_encryption_sdk.material_providers.static import StaticCryptographicMaterialsProvider
from dynamodb_encryption_sdk.materials import DecryptionMaterials, EncryptionMaterials
from dynamodb_encryption_sdk.structures import EncryptionContext

pytestmark = [pytest.mark.unit, pytest.mark.local]


@pytest.mark.parametrize(
    "method, message",
    (
        ("decryption_materials", "No decryption materials available"),
        ("encryption_materials", "No encryption materials available"),
    ),
)
def test_no_materials(method, message):
    empty_cmp = StaticCryptographicMaterialsProvider()

    with pytest.raises(AttributeError) as excinfo:
        getattr(empty_cmp, method)(EncryptionContext())

    excinfo.match(message)


@pytest.mark.parametrize(
    "invalid_kwargs",
    (dict(decryption_materials="not decryption materails"), dict(encryption_materials="not encryption materails")),
)
def test_attrs_fail(invalid_kwargs):
    with pytest.raises(TypeError):
        StaticCryptographicMaterialsProvider(**invalid_kwargs)


@pytest.mark.parametrize(
    "materials, method",
    (
        (MagicMock(__class__=DecryptionMaterials), "decryption_materials"),
        (MagicMock(__class__=EncryptionMaterials), "encryption_materials"),
    ),
)
def test_valid_materials(materials, method):
    kwargs = {method: materials}
    static_cmp = StaticCryptographicMaterialsProvider(**kwargs)

    assert getattr(static_cmp, method)(EncryptionContext()) is materials